Synthesis and structural characterization of dibromidobis(N,N′- dimethylthiourea-κS)cadmium(II) and diiodidobis(N,N′- dimethylthiourea-κS)cadmium(II)

Cadmium(II) complexes, dibromidobis(N,N′-dimethylthiourea-S) cadmium(II), [Cd(Dmtu)₂Br₂] (1) and diiodidobis(N, N′-dimethylthiourea-S)cadmium(II), [Cd(Dmtu)₂I₂] (2), have been prepared and their structures have been determined by X-ray crystal structure analysis. Compound 1 crystallized in the monoclinic space group C2/c, and the metal ion is situated on a twofold rotation axis. Compound 2 also crystallized in a monoclinic space group, P2₁/c, but here the molecules have no crystallographic symmetry. In both compounds the cadmium atom is bonded to two halide ions and to two dimethylthiourea molecules through the sulfur atoms in a tetrahedral environment. The molecules are linked via N-H⋯Halide hydrogen bonds to form infinite one-dimensional chains in 1 and infinite two dimensional networks in 2. The complexes were also characterized by IR and NMR spectroscopy and the data are consistent with the structures of the compounds.